Harman Kardon HK680 - General Instructions and Safety; Always Use at 230 V AC; Do Not Open the Cabinet

HK680 ‘
SPECIFICATIONS
RMS Output Power
8 Q, 1kHz THD 0.1%
49, 1kHz THD 0.3%
High-instantaneous Current
Capability (HCC)
Half Power Bandwidth
(THD 0.1%)
Frequency Response
(at -3dB down) 0.25Hz-248kHz <1Hz-2200kHz
Input Sensitivity (at 85W output)
Tuner/CD: 140MV_ >140MV+L25MV/20kKQ43kQ
Option Phono (MM): = 2.4mV/49kohm
Option Phono (MC): 131pV/56Q
Signal to Noise Ratio
Tuner/CD: 82.6dB 2 74dB
Option Phono (MM): 79dB
Option Phono (MC): 75dB
Channel Separation (at 10kHz)
69.8dB 2 50dB
Option Phono (MM): 65dB
Option Phono (MC): 65dB
IM Distortion Ratio (at 1W) 0.042% $0.1%
Damping Factor (at 1kHz) 64.2 260
Phono-Overload
Option Phono (MM): 109mV
Option Phono (MC): 5.6mV
Nominal Limit
96.5W 2 85W
147.9W 2 120W
76.0A 270A
<10H2-98kHz <10Hz-80kHz
POWER CORD REPLACEMENT
In order to prevent fire or shock hazard when replacing the power cord, follow the procedure below to replace
the parts with the standard supply parts.
BROWN LEAD
POWER SUPPLY
P.C.BOARD
Heat shrinkable tube
Nominal Limit
Tone Control Characteristics
Bass (at 50Hz)
Boost 10dB + 2dB
Cut 10dB + 2dB
Treble (at 10kHz)
Boost : 10dB + 2dB
Cut 10dB + 2dB
DC Output Voltage (at 8Q)
L channel OmV + 60mV
R channel OmV + 60mV
Idling Current (at 8Q) 50.0mA 50mA+5mA
Dimensions 17.4” x 5.3” x 16.0”
(Wx H x D) (443 x 134 x 406 mm)
Weight 27.3lbs. / 12.4kg
Power Supply AC 230V, 50/60Hz
Power Consumption 300W
These specifications are service target specs.
Specifications and components are subject to change without notice.
Overall performance will be maintained or improved.
PG1
POWER CORD
ES
A